package cn.chencq.springcloud.backend.common.validator;

import java.util.Set;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;

import cn.chencq.springcloud.backend.common.exception.RRException;

/**
 * 
 * @ClassName: ValidatorUtils
 * @Description: hibernate-validator校验工具类
 *               参考文档：http://docs.jboss.org/hibernate/validator/5.4/reference/en-US/html_single/
 * @author: chaoqun.chen
 * @date: 2019年5月12日 下午7:04:49
 */
public class ValidatorUtils {
	private static Validator validator;

	static {
		validator = Validation.buildDefaultValidatorFactory().getValidator();
	}

	/**
	 * 校验对象
	 * 
	 * @param object 待校验对象
	 * @param groups 待校验的组
	 * @throws RRException 校验不通过，则报RRException异常
	 */
	public static void validateEntity(Object object, Class<?>... groups) throws RRException {
		Set<ConstraintViolation<Object>> constraintViolations = validator.validate(object, groups);
		if (!constraintViolations.isEmpty()) {
			StringBuilder msg = new StringBuilder();
			for (ConstraintViolation<Object> constraint : constraintViolations) {
				msg.append(constraint.getMessage()).append("<br>");
			}
			throw new RRException(msg.toString());
		}
	}
}
